Updates to the Conventions (2010) started in May 2011 and are available in this web page.
The history of updates from the Conventions (2003) to the Conventions (2010) is kept here.
You can still send us feedback on the IERS Conventions by filling the survey.
A first evaluation of the replies may be found here.
Comments and proposals may also be sent to the principal scientists of the IERS Convention Center,
Gérard Petit and
The list below provides links to all parts of the Conventions. The same information can be found on USNO
The complete set of files and associated software are available on two identical ftp sites
at the BIPM and at the
A comprehensive list of all software in the Conventions (2010) web site is available
A page containing additional material to the Conventions is available here.
Conventions (2010): Full document (pdf), final version 15 December 2010.
Chapter 8 - Tidal variations in the Earth's rotation.
Chapter 9 - Models for atmospheric propagation delays.
Chapter 10 - General relativistic models for space-time coordinates and
equations of motion.
Chapter 11 - General relativistic models for propagation.
There are differences between the final version of the Conventions (2010) and the chapters in
the latest update to the Conventions (2003). The list below presents only
significant changes in the technical content.
In addition, typos have been corrected, some words have changed, some references have been improved and the layout of the IERS
Technical Notes has been adopted.
Introduction: Complete some information in Table 0.2.
Chapter 4: Change equation (4.16) and the following two lines.
Chapter 7: Change last sentence of section 7.1.3.
Chapter 7: Correct t0 in equation (7.25) for the conventional mean pole to be 2000.0, not 2010.0.
Chapter 7: Page 113, 6 lines from bottom, the reference is corrected to Section 7.1.2 (was 7.1.1).
Chapter 9: Change some text 10 lines after equation (9.12) and 4 lines before equation (9.13).
Chapter 9: Change title to "Models for atmospheric propagation delays".